Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
       Order Myida Stoliczka, 1870
         Suborder Pholadina Newell, 1965 see Superfamily Pholadoidea Lamarck, 1809
           Superfamily Pholadoidea Lamarck, 1809
             Family Pholadidae Lamarck, 1809 - piddocks
               Subfamily Martesiinae Grant & Gale, 1931
                 Genus Lignopholas Turner, 1955